#include <iostream>
#include <vector>
#include <string>

using namespace std;

void readEmAll(vector<string> &x) {
  for (string work; cin>>work;)
    x.push_back(work);
  }

void writeEmAll(const vector<string> &x) {
  int i=0;
  //for (vector<string>::const_iterator p=x.begin();
  for (auto p=x.begin();
       p!=x.end();
       p++,i++)
    cout<<i<<'"'<<(*p)<<"\" "<<(*p).size()<<endl;
  }

string concatStrings(const vector<string> &x) {
  string work;
  for (vector<string>::const_iterator p=x.begin();
       p!=x.end();
       p++)
    work+=(*p);
  return work;  // Will lead to more copying
  }

void concatStrings(const vector<string> &x,string &work) {
  for (vector<string>::const_iterator p=x.begin();
       p!=x.end();
       p++)
    work+=(*p);
  }

void append(vector<string> &x,string suffix) {
  for (vector<string>::iterator p=x.begin();
       p!=x.end();
       p++)
    (*p)+=suffix;
  }

void append(vector<string> &x,char suffix) {
  for (vector<string>::iterator p=x.begin();
       p!=x.end();
       p++)
    (*p)+=suffix;
  }

bool suffixCheck(const vector<string> &x,const string &s) {
  for (vector<string>::const_iterator p=x.begin();
       p!=x.end();
       p++)
    if ((*p).substr((*p).size()-s.size(),s.size())!=s)
      return false;
  return true;
  }

int main() {
  vector<string> allStrings;

  readEmAll(allStrings);
  writeEmAll(allStrings);
  //string concat=concatStrings(allStrings);
  string concat;
  concatStrings(allStrings,concat);
  cout<<"Everything concatenated:"<<endl;
  cout<<concat<<endl;
  append(allStrings,"X");
  writeEmAll(allStrings);
  cout<<endl;
  append(allStrings,'\0');
  append(allStrings,'\0');
  append(allStrings,'\0');
  writeEmAll(allStrings);
  cout<<"suffixcheck: "<<suffixCheck(allStrings,string("X")+'\0'+'\0'+'\0')<<endl;

  string unsorted("sdakfkfjgABFCcCbYREEzckfsl;*#*b#*2342a3424");
  string sorted=unsorted;
  sort(sorted.begin()+5,sorted.end()-5);
  cout<<sorted<<endl;
  }